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kernel BUG at net/core/skbuff.c:2193!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 21700 Comm: syz-executor5 Not tainted 4.4.171+ #10
task: ffff8800a708df00 task.stack: ffff8801d92d8000
RIP: 0010:[<ffffffff821f5eb7>]  [<ffffffff821f5eb7>] skb_copy_and_csum_bits+0x6e7/0x800 net/core/skbuff.c:2193
RSP: 0000:ffff8801db6072b8  EFLAGS: 00010206
RAX: ffff8800a708df00 RBX: 0000000000000000 RCX: 1ffff10013d67569
RDX: 0000000000000100 RSI: ffffffff821f5eb7 RDI: ffff88009eb3ab48
RBP: ffff8801db607348 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000003c R11: ffff8800b2c494df R12: 0000000029c368b5
R13: ffff88009e4a7a00 R14: ffff88009eb3ab40 R15: 000000000000003c
FS:  00000000020c0940(0063) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30031000 CR3: 00000001b292a000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff88009e4a7d48 ffffffff824452ad ffffffff812580cd ffff8800b2c49268
 0000003c8271ab96 ffffffff810e187a ffffffff8271a2ce ffffffff8271961d
 ffff88009e4a7d44 ffff8800a708df00 000001e829c368b5 ffff88009e4a7c80
Call Trace:
 <IRQ> 
 [<ffffffff824939bf>] icmp_glue_bits+0x7f/0x1e0 net/ipv4/icmp.c:344
 [<ffffffff823ca8c1>] __ip_append_data.isra.0+0x1e91/0x2a20 net/ipv4/ip_output.c:1045
 [<ffffffff823cb53c>] ip_append_data.part.0+0xec/0x160 net/ipv4/ip_output.c:1195
 [<ffffffff823d0129>] ip_append_data+0x69/0x90 net/ipv4/ip_output.c:1184
 [<ffffffff824935c9>] icmp_push_reply+0x199/0x510 net/ipv4/icmp.c:362
 [<ffffffff82494d4a>] icmp_send+0xaca/0x1410 net/ipv4/icmp.c:727
 [<ffffffff823cb764>] ip_fragment net/ipv4/ip_output.c:511 [inline]
 [<ffffffff823cb764>] ip_fragment.constprop.0+0x1b4/0x200 net/ipv4/ip_output.c:498
 [<ffffffff823cbb69>] ip_finish_output+0x3b9/0xc60 net/ipv4/ip_output.c:286
 [<ffffffff823cfe27>] NF_HOOK_COND include/linux/netfilter.h:240 [inline]
 [<ffffffff823cfe27>] ip_output+0x227/0x4c0 net/ipv4/ip_output.c:362
 [<ffffffff823ccb9c>] dst_output include/net/dst.h:498 [inline]
 [<ffffffff823ccb9c>] ip_local_out+0x9c/0x180 net/ipv4/ip_output.c:119
 [<ffffffff823cdf0c>] ip_queue_xmit+0x89c/0x1ab0 net/ipv4/ip_output.c:461
 [<ffffffff824317f4>] __tcp_transmit_skb+0x1904/0x2cf0 net/ipv4/tcp_output.c:1034
 [<ffffffff8243bf6a>] tcp_transmit_skb net/ipv4/tcp_output.c:1047 [inline]
 [<ffffffff8243bf6a>] __tcp_retransmit_skb+0x5ea/0x1710 net/ipv4/tcp_output.c:2665
 [<ffffffff8243d853>] tcp_retransmit_skb+0x23/0x2c0 net/ipv4/tcp_output.c:2682
 [<ffffffff8244336e>] tcp_retransmit_timer net/ipv4/tcp_timer.c:461 [inline]
 [<ffffffff8244336e>] tcp_retransmit_timer+0x7ee/0x1f70 net/ipv4/tcp_timer.c:379
 [<ffffffff82444eac>] tcp_write_timer_handler+0x3bc/0x700 net/ipv4/tcp_timer.c:543
 [<ffffffff824452ad>] tcp_write_timer+0xbd/0xd0 net/ipv4/tcp_timer.c:561
 [<ffffffff812580cd>] call_timer_fn+0x18d/0x850 kernel/time/timer.c:1185
 [<ffffffff81258caf>] __run_timers kernel/time/timer.c:1261 [inline]
 [<ffffffff81258caf>] run_timer_softirq+0x51f/0xb70 kernel/time/timer.c:1444
 [<ffffffff8271ab96>] __do_softirq+0x226/0xa3f kernel/softirq.c:273
 [<ffffffff810e187a>] invoke_softirq kernel/softirq.c:350 [inline]
 [<ffffffff810e187a>] irq_exit+0x10a/0x150 kernel/softirq.c:391
 [<ffffffff8271a2ce>] exiting_irq arch/x86/include/asm/apic.h:652 [inline]
 [<ffffffff8271a2ce>] smp_apic_timer_interrupt+0x7e/0xb0 arch/x86/kernel/apic/apic.c:926
 [<ffffffff8271961d>] apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:768
 <EOI> 
Code: ff ff e8 4d 35 11 ff be 7f 08 00 00 48 c7 c7 a0 24 a5 82 e8 dc db ed fe e9 48 fe ff ff 44 8b 7d d4 e9 c4 fd ff ff e8 29 35 11 ff <0f> 0b 4c 89 f7 e8 9f ea 28 ff e9 b2 fa ff ff 48 89 55 b8 e8 d1 
RIP  [<ffffffff821f5eb7>] skb_copy_and_csum_bits+0x6e7/0x800 net/core/skbuff.c:2193
 RSP <ffff8801db6072b8>
---[ end trace 8d56f619f19bc75f ]---